Theists, what does faith mean to you?

[Mystic]

And your evidence for "prophets" and "chosen ones" is?

First God himself is the reality by which other beings get their rank from and stages from, and I've even discussed this as a proof of God because when there is ranks in creation it implies we are ascending or falling with respect to an absolute reality that is  of value and of utmost high rank.  It's by rational we know God is infinite in grace and would create infinite creation (infinite universes as a result). This gives room for infinite potential of infinite exalted souls including perfect souls. Through God's Name, we are reminded of a special love he has towards his chosen ones, purifying them and blessing them with immense blessings that make them very near his glory, taste of his unseen beauty and majesty, and we know we too been created for the purpose of this path. As we are fallen, our hearts are chained, we are deceived by delusions of this world and unseen darkness in our hearts (pointing to dark forces on human hearts), we are in need of divine reminder and due to the position of the Lord, a special admonishment of the Lord will have a special effect. As well, his exalted pure chosen ones would be most fit to guide humanity. Out of wisdom it makes sense God tested these souls and there exists in his knowledge trustworthy souls by which he can entrust his messages too. From the hidden unseen forces, he chosen from his Angels and chosen Angels. From sentient beings that live on planets he chose to place his best servants there. Consequently due to his praiseworthy nature and majestic wisdom, he begins with his perfect souls in each universe thereby teaching the unseen forces (Angels) and also seals perfection in sentient beings by placing guides among them.   

God has a special love for his special lovers and most sincere servants, and the way he uses them and exalts them, is manifested through his greatest name. Consequently, this wisdom would be manifested and reminded, by which he tries and guides and raises his servants through his chosen ones. The praise belongs to God of how his way with his elite friends. 

It also makes sense aside from this, that is logical that God would want us to follow the best of his creation as opposed to people greedy for leadership. As humanity generally is lead by greedy people and his friends find oppression and injustice spread through them, it makes sense God being the Lord of the universe, would place a balance in form of a Mastership and leadership and handhold and rope from him.  Otherwise, the best servants would have no way to manifest their guidance, and jealousy towards what they claim would blind people to their station without much help from God to prove their station.

Aside from this is that we are indeed in falling state, and in desperate need of reminder and awakening. Consequently the best servants who are in contact with God cannot make known their contact with the divine and there guided path, unless, through God manifesting their leadership and guidance.

Aside from this, is God is Unseen, and his path to him is unseen, but also takes application in the real world. As we have divine treasures within us, it makes sense God would not spoil this gift but through is mercy and compassion establish a program by which we seek to perfect the divine treasures and links with the higher stations meant for us.  And as the path to him is unseen, he would remind us of the guidance that is unseen through company of a spiritual guide that shows the way. Consequently, emphasizing to know who this guide is in each time and age, is of the utmost wisdom, because by that, he would make being a handhold and rope of his to unite upon. 

If you are asking how God would prove their authority, it's by 1) physical miracles 2) a book/revelation from him that designates them and is of such majestic quality that it is beyond the scope of creation to do.  As God's mind is perfect, he can surely create literature that is way beyond the scope of humanity. And we have the capacity to appreciate literature being beyond our capability.  It just it takes reflection to appreciate this higher literature. The reason it takes reflection is 1) dark forces want us to belittle it and put locks regarding it 2) it's of subtle and discrete majesties otherwise it would be too easy.

And it's through the reflection of the heart that the divine majestic speech is realized, a sublime wisdom, to majestic for humanity to copy.

Now sure a lot of religions can claim that, but you have to look for yourself and study yourself if you believe logically that it follows:

1) God's Praise leads to belief there would be exalted chosen ones he would make leaders and ways toward him, being exalted in wisdom, they would want to share their wisdom and God would command them to share their wisdom.
2) God's wisdom is that he would reveal a book proving their authority as their wisdom cannot be proven to most people except through proof.
3) This book would be through reflection proven beyond capability of mortals, and that is why it is a proof.

And it would make sense to me, that the holy book itself would emphasize on this wisdom.